Reproductive system, Nephrons and Pathologies Flashcards
Where does a vasectomy occur?
Ductus deferens
What two parts of the posterior urinary bladder join to make the ejaculatory duct?
Ampulla of ductus deferent & Seminal gland
Where does capacitation of spermatozoa start?
Ejaculatory duct
What are the 4 functions of the epididymis?
- Stores spermatozoa
- Protects spermatozoa
- Recycles damaged or old spermatozoa, by breaking them down with enzymes
- Monitors and adjusts composition of fluid produced by seminiferous tubules for optimal benefit of spermatozoa
What hormone initiates muscle contractions along the male and female reproductive tract?
Prostaglandins
After ejaculation, what hormone found in semen forms a temporary clot in the vagina?
Fibrinogen
What is the name of the antibacterial enzyme secreted by the prostate gland that decreases UTIs in men?
Seminalplasmin
What is capacitation ?
The initiation of spermatozoa swimming
What is emission?
Discharge of a small volume of semen before ejaculaiton
What is ejaculation?
Powerful release of semen from urethra to the exterior
T or F? Ejaculation is a parasympathetic reflex
False! it is a SYMPATHETIC REFLEX
What part of the spine is ejaculation coordinated by?
Lumbar portion of spine
What secretion from the seminal gland is slightly alkaline to help neutralize the acids in the secretions?
Fibrinogen
What 3 ions are secreted in to the DCT in exchange for NA+
Hydrogen ions
Ammonium ions
Potassium ions
What hormone controls the reabsorption of NA+ in the collecting duct?
Aldosterone
____ acts on the collection system for the reabsorption of H20
Antidiuretic Hormone (ADH)
Bicarbonate ions are reabsorbed in exchange for ____
Chloride (Cl-)
What is the name of the two pumps found in the DCT that take in the body’s toxins
Sodium and Chloride pumps
What do chemoreceptors do? Where are they found?
Regulates level of pH, CO2 and O2 in blood
Found in: walls of carotid arteries, and aortic arch
What do baroreceptors do? Where are they found?
Monitors stretch of arteries
Found in: walls of carotid arteries, aorta, and right atrium
What is hypernatremia? What causes it? What are some symptoms?
Abnormally high levels of sodium in body
due to: loss of H20
symptoms: thirst, dry/wrinkling skin,
What is hyponatremia? What causes this?
(aka as water intoxication) very low levels of sodium in the body
Due to: large intake of water
Overhydration causes ______, where as dehydration causes ______.
Overhydration = hyponatremia Dehydration = hypernatremia
What does the Protein Buffer System do?
This is when amino acids respond to pH change by + or - a hydrogen ion to their composition
What is the Carbonic-Acid Buffer System equation?
H20+CO2 < ~ > H2OCO3 < ~ >H+ HCO3-
What does the Phosphate Buffer System use?
The anion H2PO4- (dihydrogen phosphate ion), which is a weak acid